My life is music, and music is my life.

问题是，我们是否乐于假设我们的孙子孙女可能永远无法在大象的图片书之外看到大象？

The past is never dead. It's not even past.

自然的简单性不应以我们概念的简单性来衡量。

科学无国界，因为知识属于人类，是照亮世界的火炬。

The past, like the future, is indefinite and exists only as a spectrum of possibilities.